Meteorology practice test

Pass mark 75% from twenty randomly chosen questions.


#1. Mean sea level density in the International Standard Atmosphere (ISA) is:

#2. For smog to form:

#3. A METAR is a weather:

#4. What is an area of high pressure called?

#5. Clear ice occurs when:

#6. When is advection fog most likely to form?

#7. Take a look at this METAR: LMML 221530Z 18007KT -DZ BR OVC004 14/13 Q1003 – What Date and Time this report was issued?

#8. In the International Standard Atmosphere (ISA), the temperature lapse rate is assumed to be:

#9. Carburettor ice is formed

#10. Virga means:

#11. Fog that forms from the interaction of two airmasses is called:

#12. In the northern hemisphere, an aircraft flying from an area of high to low pressure will experience:

Due to the anti-clockwise motion of the airmass, and going towards the low pressure area, the wind will be from the left (port) causing a right (starboard) drift.

#13. At the passage of a warm front you would expect:

#14. You’re at an airfield just a few feet above sea level, and it’s a standard day (ISA). Approximately what altitude would you find a temperature of -1 degrees Celsius?

The standard lapse rate is 2 degrees for every thousand feet. ISA standard temperature is 15 degrees at sea level.

The difference between 15 and -1 is 16 degrees. Dividing this value by 2 (two degrees per thousand feet) gives you 8. Multiply that by 1,000 and you get an altitude of 8,000 feet.

#15. On a cold, clear night, ice crystals may form on a surface directly from water vapour. What is this process called?

#16. The observed temperature at the surface is +16°C and at 4000 feet the temperature is +11°C. The state of the atmosphere can be described as:

#17. There is a natural tendency for air to flow to areas of ________ pressure from areas of ________ pressure. (Fill in the missing spaces correctly.)

#18. What is the wind that forms from the result of air warming on the side of a valley called?

#19. In the ISA, what is the atmospheric pressure at sea level?

#20. For saturated air, the lapse rate is _______________ ; this is called the Saturated Adiabatic Lapse Rate (SALR)